What's in the box:

DC-DC 5V-30V to 1.25-30V 8A Constant Voltage Current Automatic Step-up/Step-Down Regulator Charging Module Boost Converter Module Adjustable Power (Standard)

Features:
Using synchronous rectification technology, the efficiency of DC / DC converter can be greatly improved, and the heating of the power supply itself can also be reduced.
Convenient for DIY. You can use this module to DIY an output-adjustable car power supply.
This module can be applied to many fields, such as vehicle power supply, voltage stabilization of solar panels, high-power LED lamps etc..
Over current protection, Short circuit protection, Overtemperature protection.
Output voltage will be reduced automatically after overtemperature.
The power supply is a kind of high-efficiency voltage automatically regulator.

Specifications:
Input voltage: DC5-30V
Input current: 8A (max), peak 10A (within 6A for long time operation)
Static working current: 4mA
Output voltage: 1.25-30V, continuously adjustable
Output current: 10A (max)
Output constant current range: 0.2-10A
Working temperature: - 40 ~ + 85 degrees
Working frequency: 150kHz
Conversion efficiency: typical 91% (12V to 12V5A) 93% higher
Over current protection/Short circuit protection/Overtemperature protection
Connection mode: terminal output, (IN is input, OUT is output)
Module size: 60mm * 53mm * 22mm (L / w / h)
Package size: 11*9*4cm
Package weight: 80g

Package list:
1 x Automatic Step Up Down Regulator Charging Module